CN109626671A - Double film integrating devices and its method for handling salt of weak acid waste water - Google Patents
Double film integrating devices and its method for handling salt of weak acid waste water Download PDFInfo
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- CN109626671A CN109626671A CN201910024128.4A CN201910024128A CN109626671A CN 109626671 A CN109626671 A CN 109626671A CN 201910024128 A CN201910024128 A CN 201910024128A CN 109626671 A CN109626671 A CN 109626671A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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Abstract
The present invention relates to a kind of films to integrate processing technique, especially a kind of double film integrating devices and its method for handling salt of weak acid waste water, and double film integrating devices include homogeneous film device and two every formula bipolar membrane electrodialysis device.Mainly sodium carbonate is precipitated using heating decarburization recrystallization in the sodium ion removing method of the existing waste water containing carbonate, but the method not only results in waste of resources, but also influences the recycling of resource.Homogeneous membrane-bipolar membrane electrodialysis (ED-BPED) integrating device is innovatively arranged in the present invention, and it applies it in the processing method of salt of weak acid waste water, sodium ion effectively in removing mother liquor, mother liquor and sodium salt solution is separately recovered for preamble workshop section, the rate of recovery of sodium ion substitutes traditional heating decarbonization method up to 90%, reduces energy consumption, reduces cost, and the bis- film integrating devices of ED-BPED may be reused, and it is environmentally protective.
Description
Technical field
The present invention relates to a kind of films to integrate processing technique, especially a kind of double film integrating devices and its processing salt of weak acid waste water
Method.
Background technique
Methionine (MET) is also known as methionine, is one of the essential amino acid for constituting human body, participates in protein synthesis, because
It itself cannot be generated in vivo, so must be obtained by outside.If methionine shortage will lead to vivo protein conjunction
At being obstructed, body damage is caused, membrane lipid excessive oxidation caused by internal oxygen radical is the reason of leading to body a variety of damages,
Lipid peroxide can damage primary and secondary lysosome membrane, make the acid phosphatase enzyme r e lease as hydrolysis contained in lysosome
Out, the organelle important to cell and mitochondrial membrane etc. damages, and methionine resists these damages through a variety of ways.
In recent years, the strong growth year by year of demand of the domestic and international market to methionine, especially domestic market, for many years domestic feed egg
Propylhomoserin is far from satisfying the market demand, will become China's medicinal chemicals import from external a large amount of imports every year
Bulk product, import volume is up to tens of thousands of tons for several years running, and import volume crosses hundred million dollars.It is expected that domestic and international market is to methionine from now on
Demand will also be increased with biggish ratio, and domestic market imbalance between supply and demand in a short time can not still solve, it is also necessary to a large amount of imports.Cause
This, the market prospects for developing methionine are very good.
Currently, methionine production mainly uses chemically synthesized method, the methionine feed liquid being synthesized, which passes through, adjusts PH,
It is passed through carbon dioxide to recrystallize to obtain methionine, but leaves largely the salt of weak acid waste water containing methionine, direct emission and be not inconsistent
Discharge standard is closed, and is wasted greatly, therefore is studied the water distribution in the road its reuse Zuo Qian methionine production process.But salt of weak acid
In waste water containing largely in the form of sodium carbonate, sodium bicarbonate, Sodium L-methioninate existing for sodium ion, influence crystallization purity.It is existing
In sodium ion removing method in salt of weak acid waste water, the main process that sodium carbonate is precipitated using heating decarburization recrystallization, carbon
Sour sodium crystallization can be back in the workshop section of leading portion glycolylurea preparation of methionine by hydrolyzing.But the processing disadvantages are as follows: 1, salt of weak acid is useless
When water heats decarburization, methionine will cause irreversible reaction under the high temperature conditions, influence methionine recycling；2, heating is de-
Carbon energy consumption is too high, is unfavorable for cost control；3, concentration needs to reach 25% when sodium carbonate crystallization is precipitated, and crystallizing under high concentration can join
The loss of hetero moiety methionine, methionine is larger.Contain methionine, Sodium L-methioninate, sodium bicarbonate and sodium carbonate in mother liquor, because
This, the present invention studies one kind can be with the process of sodium ion in efficient removal salt of weak acid waste water, while can recycle sodium ion,
The technique for preparing methionine for preceding road.
Summary of the invention
The present invention is and to provide a kind of double film integrating devices and its processing is weak to solve above-mentioned deficiency in the prior art
The method of hydrochlorate waste water.
One of the objects of the present invention is to provide a kind of method for handling salt of weak acid waste water, this method is bis- by homogeneous membrane-
The combination of pole membrane electrodialysis, handles waste water.Realize that specific technical solution used by the goal of the invention is as follows:
A method of processing salt of weak acid waste water, this method comprises the following steps:
S1, salt of weak acid waste water is sent into the mother liquor channel in primary homogeneous film device, carries out first time processing, removing is useless
Sodium bicarbonate in water obtains an ED mother liquor；
S2, by step S1, treated that ED mother liquor is sent into two every the mother liquor channel in formula bipolar membrane electrodialysis device
In, so that the sodium carbonate in mother liquor is converted into sodium bicarbonate and obtain BPED mother liquor, the sodium hydroxide solution generated in pure water channel returns
Use methionine preparation workshop section；
S3, by step S2, treated that BPED mother liquor is sent into the mother liquor channel in secondary homogeneous film device, carries out second
Secondary processing, further removes sodium bicarbonate, and the mother liquor after secondary homogeneous film device secondary treatment returns to methionine preparation workshop section set
With.
The second object of the present invention is to provide a kind of double film integrating devices, by the way that homogeneous membrane-bipolar membrane electrodialysis is arranged
(ED-BPED) integrating device substitutes traditional heating decarbonization method, reduces energy consumption, reduces cost, and the bis- film collection of ED-BPED
It may be reused at device, it is environmentally protective.Realize that specific technical solution used by the goal of the invention is as follows:
It is a kind of for handling double film integrating devices of processing salt of weak acid waste water, which includes primary homogeneously film device, two
Every formula bipolar membrane electrodialysis device (BPED) and secondary homogeneous film device；
The primary homogeneous film device includes three homogeneous membranes water inlet branches and at least one first homogeneous membrane module,
The first homogeneous membrane module by the first anode, the first cathode, be respectively arranged on first anode and the first cathode on the inside of at least two
The parallel arrangement of first yin-yang mold component composition of group；First anode and the first cathode respectively with the first adjacent yin-yang mold group
Part, which respectively clamps, forms a pole water circulation channel；First yin-yang mold component described in every group includes that cathode exchange membrane and anode are handed over
Film is changed, and anode exchange membrane, close to the first anode, cathode exchange membrane is close to the first cathode；Three homogeneous membranes water inlet branch
Road is successively arranged the first water tank, the first delivery pump and first filter；First homogeneous membrane water inlet branch end connects
Connect the pure water channel entrance in every group of first yin-yang mold component between yin-yang film, homogeneous membrane water inlet branch end of Article 2
The pole water circulation channel import of two sides is connected, homogeneous membrane water inlet branch end of Article 3 connects the first yin-yang of two adjacent groups film
Mother liquor channel entrance between sub-component；
Described two include three Bipolar Membranes water inlet branches every formula bipolar membrane electrodialysis device and at least one is two bipolar every formula
Membrane electrodialysis component, described two by the second anode, the second cathode and are set between positive and negative anodes every formula bipolar membrane electrodialysis stack
Membrane module composition, the membrane module is arranged alternately by n anode exchange membrane and (n-1) a Bipolar Membrane and formed, and close positive and negative
Pole is anode exchange membrane；The pole aquaporin at both ends is formed between positive and negative anodes under the separation of membrane module and is located at both ends pole
The mother liquor channel and pure water channel that several groups between aquaporin are arranged alternately；Described three Bipolar Membranes water inlet branch road according to
It is secondary to be equipped with the second water tank, the second delivery pump and the second filter；First Bipolar Membrane is intake described in the second water tank connection of branch road
Each mother liquor channel outlet in primary homogeneous film device, first Bipolar Membrane water inlet branch end connection described two is every formula Bipolar Membrane
Each mother liquor channel entrance of electrodialysis plant；Article 2 Bipolar Membrane intakes the connection described two of branch end every formula bipolar membrane electrodialysis
The pure water channel entrance of device, Article 3 Bipolar Membrane water inlet branch end connect described two every the pole of formula bipolar membrane electrodialysis device
Aquaporin；
The secondary homogeneous film device includes three secondary homogeneous membranes water inlet branches and at least one second homogeneous membrane module,
The second homogeneous membrane module by third anode, third cathode, be respectively arranged on third anode and third cathode on the inside of at least two
The parallel arrangement of second yin-yang mold component composition of group；Third anode and third cathode respectively with the second adjacent yin-yang mold group
Part, which respectively clamps, forms a pole water circulation channel；Second yin-yang mold component described in every group includes that cathode exchange membrane and anode are handed over
Film is changed, and anode exchange membrane, close to third anode, cathode exchange membrane is close to third cathode；Three secondary homogeneous membrane water inlet branch
Road is successively arranged third water tank, third delivery pump and third filter；The of first article of secondary homogeneous membrane water inlet branch road
Three-tank connect described two every formula bipolar membrane electrodialysis device each mother liquor channel outlet, first secondary homogeneous membrane intake branch
End connects the pure water channel entrance in every group of second yin-yang mold component between yin-yang film, the secondary homogeneous membrane water inlet branch of Article 2
Road end connects the pole water circulation channel import of two sides, and Article 3 secondary homogeneous membrane water inlet branch end connects two adjacent groups second
Mother liquor channel entrance between yin-yang mold component.
Preferably, the n is the natural number not less than 2.
Preferably, sharing 300 group of first yin-yang mold component in the primary homogeneous film device.
Preferably, sharing 300 group of second yin-yang mold component in the secondary homogeneous film device.
Preferably, the membrane module is arranged alternately and is formed by 300 anode exchange membranes and 299 Bipolar Membranes.
Preferably, homogeneous membrane water inlet branch of Article 2 and Article 3 of the primary homogeneous film device are once homogeneous
Film water inlet branch road is equipped with First Heat Exchanger.
Preferably, described two every formula bipolar membrane electrodialysis device Article 2 Bipolar Membrane intake branch and Article 3 it is bipolar
Film water inlet branch road is equipped with the second heat exchanger.
Preferably, the secondary homogeneous membrane water inlet branch of the Article 2 of the secondary homogeneous film device and Article 3 are secondary homogeneous
Film water inlet branch road is equipped with third heat exchanger.
Preferably, the Bipolar Membrane is single membrane method or Bipolar Membrane prepared by bi-membrane method.
The third object of the present invention is to provide the ED-BPED method of bis- film integrating device processing salt of weak acid waste water, the party
Method not only can be with the sodium ion in efficient removal waste water, while recycling sodium salt, reduces wastewater discharge, reduces enterprise wastewater
The operating pressure for the treatment of stations.Realize that specific technical solution used by the goal of the invention is as follows:
Using the method for the processing salt of weak acid waste water of double film integrating devices described in above-mentioned any one scheme, this method includes
Following steps:
S1, salt of weak acid waste water is sent into the primary homogeneous film device by first homogeneous membrane water inlet branch
In mother liquor channel, first time processing is carried out, the sodium bicarbonate in waste water is removed, obtains an ED mother liquor；
S2, step S1 treated ED mother liquor intake by first Bipolar Membrane to be sent into described two double every formula for branch
In mother liquor channel in the membrane electrodialysis device of pole, so that the sodium carbonate in mother liquor is converted into sodium bicarbonate and obtain BPED mother liquor, pure water
The sodium hydroxide solution generated in channel is back to use methionine preparation workshop section；
S3, step S2 treated BPED mother liquor is sent into secondary homogeneous membrane by first secondary homogeneous membrane branch of intaking
In mother liquor channel in device, carries out second and handle, sodium bicarbonate is further removed, after secondary homogeneous film device secondary treatment
Mother liquor return to methionine preparation workshop section apply.
By the process, sodium ion removal efficiency reaches 90-95% in mother liquor, and effective recycling is prepared in methionine
In process.Sodium ions content is 0.25-0.31%, methionine content 5.1-6.27% in final mother liquor.
Preferably, the salt of weak acid waste water be methionine produce waste water, pH be 8.5~9.0, conductivity be 50~
60mS/cm, the mass fraction of methionine is 4.5~5.5% in waste water, and the mass fraction of sodium ion is 2.5~3.5%.
It is integrated the invention has the benefit that homogeneous membrane-bipolar membrane electrodialysis (ED-BPED) is innovatively arranged in the present invention
Device, and apply it in the processing method of salt of weak acid waste water, the sodium ion in mother liquor is effectively removed, keeps mother liquor and sodium salt molten
Liquid, which is separately recovered, prepares methionine for preamble workshop section, and the rate of recovery of sodium ion substitutes traditional heating decarburization up to 89% or more
Method reduces energy consumption, reduces cost, and the bis- film integrating devices of ED-BPED may be reused, environmentally protective, meanwhile, removing
Sodium ion in mother liquor recycles sodium salt, reduces wastewater discharge, reduces the operating pressure at scale wastewater treatment station.
Detailed description of the invention
Fig. 1 is of the invention for handling double film integrating device structural schematic diagrams of processing salt of weak acid waste water；
Fig. 2 is homogeneous membrane schematic device of the present invention；
Fig. 3 is the schematic illustration of the homogeneous film device of the present invention；
Fig. 4 is two every formula bipolar membrane electrodialysis device schematic diagram.
Fig. 5 is schematic illustration of the present invention two every formula bipolar membrane electrodialysis device.
Appended drawing reference in figure: the primary homogeneous film device of 1-；2- two is every formula bipolar membrane electrodialysis device；Bis- homogeneous membrane dresses of 3-
It sets；The first water tank of 11-；The first delivery pump of 12-；13- first filter；14- First Heat Exchanger；The homogeneous membrane module of 15- first；
The first anode of 15-1；The first cathode of 15-2；15-3- the first yin-yang mold component；The first pole 15-4- water inlet；The first pole 15-5-
Water out；15-6- salt of weak acid waste water inlet；The first purified water inlet of 15-7-；The first ED mother liquor outlet of 15-8-；15-9- bicarbonate
Sodium solution outlet；The first press of 15-10-；The second water tank of 21-；The second delivery pump of 22-；The second filter of 23-；24- second exchanges heat
Device；25- two is every formula bipolar membrane electrodialysis stack；The second anode of 25-1-；The second cathode of 25-2-；25-3- membrane module；25-4-
Two pole water inlets；The second pole 25-5- water out；The 2nd ED mother liquor import of 25-6-；The second purified water inlet of 25-7-；25-8-BPED
Mother liquor outlet；The outlet of 25-9- sodium hydroxide solution；The second press of 25-10-；Third water tank 31；Third delivery pump 32；Third mistake
Filter 33；Third heat exchanger 34；Second homogeneous membrane module 35；Third anode 35-1；Third cathode 35-2；Second yin-yang mold group
Part 35-3.
Specific embodiment
Below by specific embodiment, in conjunction with attached drawing, explanation is further described to technical solution of the present invention.
A kind of method for processing salt of weak acid waste water that the present invention designs, process include the following steps:
S1, salt of weak acid waste water is sent into the mother liquor channel in primary homogeneous film device, carries out first time processing, removing is useless
Sodium bicarbonate in water obtains an ED mother liquor；
S2, by step S1, treated that ED mother liquor is sent into two every the mother liquor channel in formula bipolar membrane electrodialysis device
In, so that the sodium carbonate in mother liquor is converted into sodium bicarbonate and obtain BPED mother liquor, the sodium hydroxide solution generated in pure water channel returns
Use methionine preparation workshop section；
S3, by step S2, treated that BPED mother liquor is sent into the mother liquor channel in secondary homogeneous film device, carries out second
Secondary processing, further removes sodium bicarbonate, and the mother liquor after secondary homogeneous film device secondary treatment returns to methionine preparation workshop section set
With.
In above-mentioned technique, primary homogeneous film device, two every formula bipolar membrane electrodialysis device and secondary homogeneous film device tool
Body structure can be according to being actually adjusted.A kind of concrete implementation form is given below.
As shown in Figure 1, to be of the invention a kind of for handle the double film integrating device ways of realization for handling salt of weak acid waste water.
The device includes primary homogeneous film device 1, two every formula bipolar membrane electrodialysis device 2 and secondary 3 three parts of homogeneous film device.
Wherein, primary homogeneous film device 1 includes three homogeneous membrane water inlet branches and a first homogeneous membrane module 15.
As shown in Fig. 2, the first homogeneous membrane module 15 by the first anode 15-1, the first cathode 15-2, be respectively arranged on the first anode 15-1 and
The parallel arrangement of first yin-yang mold component 15-3 composition of at least two groups on the inside of first cathode 15-2, two sides end plate pass through first
Press 15-10 applies pressure.Its internal schematic illustration is as shown in Figure 3.First anode 15-1 and the first cathode 15-2 difference
It is respectively clamped with the first adjacent yin-yang mold component 15-3 and forms a pole water circulation channel.Every group of first yin-yang mold component
15-3 is made of one group of cathode exchange membrane and anode exchange membrane, and anode exchange membrane is close to the first anode 15-1, cathode exchange
Film is close to the first cathode 15-2.Three homogeneous membrane water inlet branch roads are successively arranged the first water tank 11, the first delivery pump 12
With first filter 13, the liquid in the first water tank 11 is stored under the driving of the first delivery pump 12 by first filter 13
Filtering, enters back into subsequent workshop section.First homogeneous membrane water inlet branch end connects every group of first yin-yang mold component 15-3
Pure water channel entrance between middle yin-yang film, i.e. the first purified water inlet 15-7, the outlet, that is, sodium bicarbonate solution in pure water channel go out
Sodium bicarbonate solution is exported in mouth 15-9.The pole water circulation channel of Article 2 homogeneous membrane water inlet branch end connection two sides into
Mouthful, i.e. the first pole water inlet 15-4, the outlet of pole water circulation channel is that the pole water of the first pole water out 15-5 carries out reuse circulation.
Mother liquor channel between Article 3 homogeneous membrane water inlet branch end connection the first yin-yang of two adjacent groups mold component 15-3 into
Mouthful, i.e. salt of weak acid waste water inlet 15-6, the outlet in mother liquor channel is that the first ED mother liquor outlet 15-8 externally exports an ED mother liquor.
When work, it is passed through pure water between the yin-yang film of each first yin-yang mold component 15-3, pole water, mother liquor are passed through in the water circulation channel of pole
From homogeneous film device is entered between yin-yang mold component, the sodium ion in mother liquor is entered by anode exchange membrane close to the pure of cathode
Aquaporin, the bicarbonate ion in mother liquor enters the pure water channel close to anode by cathode exchange membrane, close to the pole of cathode
Bicarbonate ion in water circulation channel enters pure water channel by cathode exchange membrane, with the sodium that enters mentioned by anode membrane from
Son forms sodium bicarbonate solution, and the sodium ion in the pole water circulation channel of anode enters pure water by anode exchange membrane and leads to
Road forms sodium bicarbonate solution with the bicarbonate ion entered mentioned by cathode exchange membrane, realizes in salt of weak acid waste water
Sodium bicarbonate removing.
In addition, two include three Bipolar Membranes water inlet branches every formula bipolar membrane electrodialysis device 2 and at least one is two double every formula
Pole membrane electrodialysis component 25, two sides end plate apply pressure by the second press 25-10.As shown in figure 4, two every formula Bipolar Membrane electric osmose
Analysis component 25 is made of the second anode 25-1, the second cathode 25-2 and the membrane module 25-3 between positive and negative anodes, inside
Schematic illustration it is as shown in Figure 5.Membrane module 25-3 is arranged alternately by n anode exchange membrane and (n-1) a Bipolar Membrane and is formed, and
What it is close to positive and negative anodes is anode exchange membrane (n is the natural number not less than 2).Between positive and negative anodes under the separation of membrane module 25-3
The mother liquor channel and pure water that the pole aquaporin and the several groups between the aquaporin of both ends pole for forming both ends are arranged alternately are logical
Road.Two every formula bipolar membrane electrodialysis device from positive best cathode to sequentially form pole aquaporin, the first mother liquor channel, the first pure water logical
Road, the second mother liquor channel, the second pure water channel ... pole aquaporin.Three Bipolar Membrane water inlet branch roads are successively arranged second
Water tank 21, the second delivery pump 22 and the second filter 23；Second water tank 21 of the first Bipolar Membrane water inlet branch road connects primary equal
Each mother liquor channel outlet (i.e. the first ED mother liquor outlet 15-8) in phase film device 1, first Bipolar Membrane water inlet branch end connect
Connect two every formula bipolar membrane electrodialysis device 2 each mother liquor channel entrance, i.e. the 2nd ED mother liquor import 25-6, the outlet in mother liquor channel
I.e. BPED mother liquor outlet 25-8 externally exports BPED mother liquor.Article 2 Bipolar Membrane intakes branch end connection two every formula Bipolar Membrane electricity
The pure water channel entrance of electrodialysis apparatus 2, i.e. the second purified water inlet 25-7, the outlet, that is, sodium hydroxide solution outlet in pure water channel
25-9 externally exports sodium hydroxide solution.Article 3 Bipolar Membrane intakes branch end connection described two every formula bipolar membrane electrodialysis dress
Set 2 pole aquaporin entrance, i.e. the second pole water inlet 25-4, the outlet of pole aquaporin be the second pole water out 25-5 pole water into
Row reuse circulation.When work, primary homogeneous film device 1 treated mother liquor is simultaneously advanced into all mother liquor channels, and pure water is parallel
Into all pure water channels, pole water enters each pole aquaporin.The hydrogen ion that Bipolar Membrane generates in each mother liquor channel enters mother liquor,
Sodium bicarbonate is formed with sodium ion, the carbanion in mother liquor, extra sodium ion enters each pure water by anode exchange membrane
Channel, the hydroxide ion and sodium ion that Bipolar Membrane generates in each pure water channel form sodium hydroxide, realize carbonate in mother liquor
It is converted into sodium bicarbonate.
In addition, the structure of secondary homogeneous film device 3 is identical with primary homogeneous film device 1, effect is to two every formula
The mother liquor being discharged in bipolar membrane electrodialysis device 2 is further processed, and removes sodium bicarbonate.Secondary homogeneous film device 3 includes
Three secondary homogeneous membrane water inlet branches and at least one second homogeneous membrane module 35, the second homogeneous membrane module 35 is by third anode
35-1, third cathode 35-2, at least two groups that are respectively arranged on the inside of third anode 35-1 and third cathode 35-2 are parallel arrangement of
Second yin-yang mold component 35-3 composition；Third anode 35-1 and third cathode 35-2 respectively with the second adjacent yin-yang mold group
Part 35-3, which is respectively clamped, forms a pole water circulation channel；The second yin-yang mold component 35-3 includes cathode exchange membrane described in every group
With anode exchange membrane, and anode exchange membrane, close to third anode 35-1, cathode exchange membrane is close to third cathode 35-2；Described three
Secondary homogeneous membrane water inlet branch road is successively arranged third water tank 31, third delivery pump 32 and third filter 33.First two
The connection of third water tank 31 two of secondary homogeneous membrane water inlet branch road every formula bipolar membrane electrodialysis device 2 each mother liquor channel outlet (i.e.
BPED mother liquor outlet 25-8), first secondary homogeneous membrane water inlet branch end connects in every group of second yin-yang mold component 35-3
Pure water channel entrance between yin-yang film, the pole water circulation channels of Article 2 secondary homogeneous membrane water inlet branch end connection two sides into
Mouthful, the mother liquor channel between Article 3 secondary homogeneous membrane water inlet branch end connection the second yin-yang of two adjacent groups mold component 35-3
Import.
In the present apparatus, there is 300 group of first yin-yang mold group in primary homogeneous film device 1 and secondary homogeneous film device 3
Part 15-3.Two are replaced every the membrane module 25-3 of formula bipolar membrane electrodialysis device 2 by 300 anode exchange membranes and 299 Bipolar Membranes
Setting composition.In addition, in order to enable entering primary homogeneous film device 1, two every formula bipolar membrane electrodialysis device 2 and secondary homogeneous membrane
The pure water of device 3, pole coolant-temperature gage are suitable for, it is also necessary to primary homogeneous film device 1 homogeneous membrane water inlet branch of Article 2 with
Homogeneous membrane water inlet branch road of Article 3 is equipped with First Heat Exchanger 14, two every the second of formula bipolar membrane electrodialysis device 2
Bipolar Membrane water inlet branch and Article 3 Bipolar Membrane water inlet branch road are equipped with the second heat exchanger 24, in secondary homogeneous film device 3
Article 2 secondary homogeneous membrane water inlet branch and the secondary homogeneous membrane water inlet branch road of Article 3 be equipped with third heat exchanger 34, pass through
Heat exchanger exchanges heat to water inlet.
Using the method for above-mentioned double film integrating device processing salt of weak acid waste water, include the following steps:
S1, the mother that salt of weak acid waste water is intake in the primary homogeneous film device 1 of branch feeding by first homogeneous membrane
In liquid channel, first time processing is carried out, the sodium bicarbonate in waste water is removed, obtains an ED mother liquor；
S2, step S1 treated ED mother liquor is sent into two every formula Bipolar Membrane by first Bipolar Membrane branch of intaking
In mother liquor channel in electrodialysis plant 2, so that the sodium carbonate in mother liquor is converted into sodium bicarbonate and obtain BPED mother liquor, pure water channel
The sodium hydroxide solution of middle generation is back to use methionine preparation workshop section；
S3, step S2 treated BPED mother liquor is sent into secondary homogeneous membrane by first secondary homogeneous membrane branch of intaking
In mother liquor channel in device 3, carries out second and handle, further remove sodium bicarbonate, secondary homogeneous 3 secondary treatment of film device
Mother liquor afterwards returns to methionine preparation workshop section and applies.
The salt of weak acid waste water of the technique suitable treatment be methionine produce waste water, pH be 8.5~9.0, conductivity be 50~
60mS/cm, the mass fraction of methionine is 4.5~5.5% in waste water, and the mass fraction of sodium ion is 2.5~3.5%.By
The process, sodium ion removal efficiency reaches 90-95% in mother liquor, and effective recycling is in methionine preparation section.Finally
Sodium ions content is 0.25-0.31%, methionine content 5.1-6.27% in mother liquor.
The methionine production waste water in specific embodiment will be handled based on above-mentioned apparatus and technique below, to show
Particular technique effect of the invention.
Embodiment 1:
Referring to attached drawing 1, the pH of salt of weak acid waste water is 8.5 in the present embodiment, conductivity 50mS/cm, methionine in mother liquor
Mass fraction be 4.5%, the mass fraction of sodium ion is 2.5%, a kind of side of double film integrating devices processing salt of weak acid waste water
Method includes the following steps:
S1, mother liquor is sent into homogeneous film device progress first time processing (ED), removes the sodium bicarbonate in mother liquor, always
Sodium ion removal efficiency is 60%；
S2, step S1 treated mother liquor is sent into two compartment bipolar membrane electrodialysis devices (BPED), handled in post mother liquor
Sodium carbonate be converted into sodium bicarbonate, and generate sodium hydroxide solution, sodium hydroxide solution is back to use glycolylurea hydrolysis workshop section, the work
The removal efficiency of the total sodium ion of section is 12%.
S3, the mother liquor of step S2 is fed again into homogeneous film device progress secondary treatment (secondary ED), further removes carbon
Sour hydrogen sodium, the total sodium ion removal efficiency of the workshop section are 18%, and the mother liquor after homogeneous film device secondary treatment is back to use carbonization crystallization work
Section is applied.
By the process, sodium ion removal efficiency is up to 90% in mother liquor, and effective recycling is in glycolylurea hydrolysis, most
Sodium ions content is 0.22% in whole mother liquor, methionine content 5.1%.
Embodiment 2:
The pH of salt of weak acid waste water is 9 in the present embodiment, conductivity 55mS/cm, and the mass fraction of methionine is in mother liquor
5%, the mass fraction of sodium ion is 3%.
Device used in the present embodiment and the method for handling salt of weak acid waste water are same as Example 1.
By the process, sodium ion removal efficiency is up to 92% in mother liquor, and effective recycling is in glycolylurea hydrolysis, most
Sodium ions content is 0.24% in whole mother liquor, methionine content 5.7%.
Embodiment 3:
The pH of salt of weak acid waste water is 9 in the present embodiment, conductivity 60mS/cm, and the mass fraction of methionine is in mother liquor
5.5%, the mass fraction of sodium ion is 3.5%.
Device used in the present embodiment and the method for handling salt of weak acid waste water are same as Example 1.
By the process, sodium ion removal efficiency is up to 91% in mother liquor, and effective recycling is in glycolylurea hydrolysis, most
Sodium ions content is 0.31% in whole mother liquor, methionine content 6.27%.
Embodiment described above is preferred version of the invention, is not intended to limit the present invention in any form,
There are also other variants and remodeling on the premise of not exceeding the technical scheme recorded in the claims.
Claims (10)
1. a kind of method for handling salt of weak acid waste water, which is characterized in that described method includes following steps:
S1, salt of weak acid waste water is sent into the mother liquor channel in primary homogeneous film device, carries out first time processing, removes in waste water
Sodium bicarbonate, obtain an ED mother liquor；
S2, by step S1, treated that ED mother liquor is sent into two every in the mother liquor channel in formula bipolar membrane electrodialysis device, makes
Sodium carbonate in mother liquor is converted into sodium bicarbonate and obtains BPED mother liquor, and the sodium hydroxide solution generated in pure water channel is back to use egg
Propylhomoserin prepares workshop section；
S3, by step S2, treated that BPED mother liquor is sent into the mother liquor channel in secondary homogeneous film device, carries out at second
Reason, further removes sodium bicarbonate, and the mother liquor after secondary homogeneous film device secondary treatment returns to methionine preparation workshop section and applies.
2. a kind of for handling double film integrating devices of processing salt of weak acid waste water, which is characterized in that described device includes primary equal
Phase film device (1), two are every formula bipolar membrane electrodialysis device (2) and secondary homogeneous film device (3)；
The primary homogeneous film device (1) includes three homogeneous membrane water inlet branches and at least one first homogeneous membrane module
(15), the described first homogeneous membrane module (15) by first positive (15-1), the first cathode (15-2), be respectively arranged on the first anode
Parallel arrangement of first yin-yang mold component (15-3) composition of at least two groups on the inside of (15-1) and the first cathode (15-2)；First
Respectively clamping forms one with the first adjacent yin-yang mold component (15-3) respectively for positive (15-1) and the first cathode (15-2)
Pole water circulation channel；First yin-yang mold component (15-3) described in every group includes cathode exchange membrane and anode exchange membrane, and anode
Exchange membrane is close to first positive (15-1), and cathode exchange membrane is close to the first cathode (15-2)；Three homogeneous membranes water inlet
Branch road is successively arranged the first water tank (11), the first delivery pump (12) and first filter (13)；First homogeneous membrane
Water inlet branch end connects the pure water channel entrance in every group of first yin-yang mold component (15-3) between yin-yang film, Article 2 one
The pole water circulation channel import of secondary homogeneous membrane water inlet branch end connection two sides, homogeneous membrane water inlet branch end of Article 3 connect
Connect the mother liquor channel entrance between two adjacent groups the first yin-yang mold component (15-3)；
Described two every formula bipolar membrane electrodialysis device (2) include three Bipolar Membranes water inlet branches and at least one two every formula Bipolar Membrane
Electrodialysis component (25), described two every formula bipolar membrane electrodialysis stack (25) by the second anode (25-1), the second cathode (25-2)
And membrane module (25-3) composition between positive and negative anodes, the membrane module (25-3) are a by n anode exchange membrane and (n-1)
Bipolar Membrane is arranged alternately composition, and close positive and negative anodes is anode exchange membrane；In point of membrane module (25-3) between positive and negative anodes
Every the lower pole aquaporin for forming both ends and the mother liquor channel that is arranged alternately of the several groups between the aquaporin of both ends pole and pure
Aquaporin；Three Bipolar Membranes water inlet branch road is successively arranged the second water tank (21), the second delivery pump (22) and second
Filter (23)；It is each in the second water tank (21) connection of first Bipolar Membrane water inlet branch road primary homogeneous film device (1)
Mother liquor channel outlet, each mother of first Bipolar Membrane water inlet branch end connection described two every formula bipolar membrane electrodialysis device (2)
Liquid channel entrance；Article 2 Bipolar Membrane water inlet branch end connection described two is logical every the pure water of formula bipolar membrane electrodialysis device (2)
Road import, pole aquaporin of the Article 3 Bipolar Membrane water inlet branch end connection described two every formula bipolar membrane electrodialysis device (2)；
The secondary homogeneous film device (3) includes three secondary homogeneous membrane water inlet branches and at least one second homogeneous membrane module
(35), the described second homogeneous membrane module (35) by third positive (35-1), third cathode (35-2), be respectively arranged on third anode
Parallel arrangement of second yin-yang mold component (35-3) composition of at least two groups on the inside of (35-1) and third cathode (35-2)；Third
Respectively clamping forms one with the second adjacent yin-yang mold component (35-3) respectively for positive (35-1) and third cathode (35-2)
Pole water circulation channel；Second yin-yang mold component (35-3) described in every group includes cathode exchange membrane and anode exchange membrane, and anode
Exchange membrane is positive (35-1) close to third, and cathode exchange membrane is close to third cathode (35-2)；Three secondary homogeneous membrane water inlets
Branch road is successively arranged third water tank (31), third delivery pump (32) and third filter (33)；First secondary homogeneous membrane
Intake branch road third water tank (31) connect described two every formula bipolar membrane electrodialysis device (2) each mother liquor channel outlet, the
It is logical that one secondary homogeneous membrane water inlet branch end connects the pure water in every group of second yin-yang mold component (35-3) between yin-yang film
Road import, the pole water circulation channel import of Article 2 secondary homogeneous membrane water inlet branch end connection two sides, Article 3 are secondary homogeneous
Mother liquor channel entrance between film water inlet branch end connection two adjacent groups the second yin-yang mold component (35-3).
3. double film integrating devices according to claim 2, which is characterized in that the n is the natural number not less than 2.
4. double film integrating devices according to claim 2, which is characterized in that shared in the primary homogeneous film device (1)
300 group of first yin-yang mold component (15-3)；300 group of second yin-yang mold component is shared in the secondary homogeneous film device (3)
(35-3)。
5. double film integrating devices according to claim 2, which is characterized in that the membrane module (25-3) is by 300 anodes
Exchange membrane and 299 Bipolar Membranes are arranged alternately composition.
6. double film integrating devices according to claim 2, which is characterized in that the second of the primary homogeneous film device (1)
Homogeneous membrane water inlet branch road of homogeneous membrane water inlet branch of item and Article 3 is equipped with First Heat Exchanger (14).
7. double film integrating devices according to claim 2, which is characterized in that described two every formula bipolar membrane electrodialysis device
(2) Article 2 Bipolar Membrane water inlet branch and Article 3 Bipolar Membrane water inlet branch road is equipped with the second heat exchanger (24).
8. double film integrating devices according to claim 2, which is characterized in that the second of the secondary homogeneous film device (3)
The secondary homogeneous membrane water inlet branch of item and the secondary homogeneous membrane water inlet branch road of Article 3 are equipped with third heat exchanger (34).
9. a kind of method using the described in any item double film integrating device processing salt of weak acid waste water of claim 2~8, feature
It is, described method includes following steps:
S1, salt of weak acid waste water is intake in the branch feeding primary homogeneous film device (1) by first homogeneous membrane
In mother liquor channel, first time processing is carried out, the sodium bicarbonate in waste water is removed, obtains an ED mother liquor；
S2, step S1 treated ED mother liquor is sent into described two every formula Bipolar Membrane by first Bipolar Membrane branch of intaking
In mother liquor channel in electrodialysis plant (2), so that the sodium carbonate in mother liquor is converted into sodium bicarbonate and obtain BPED mother liquor, pure water is logical
The sodium hydroxide solution generated in road is back to use methionine preparation workshop section；
S3, step S2 treated BPED mother liquor is sent into secondary homogeneous film device by first secondary homogeneous membrane branch of intaking
(3) it in the mother liquor channel in, carries out second and handles, further remove sodium bicarbonate, secondary homogeneous film device (3) secondary treatment
Mother liquor afterwards returns to methionine preparation workshop section and applies.
10. the method for the processing salt of weak acid waste water as described in claim 1 or 9, which is characterized in that the salt of weak acid waste water is
Methionine produces waste water, and pH is 8.5~9.0, and conductivity is 50~60mS/cm, in waste water the mass fraction of methionine be 4.5~
5.5%, the mass fraction of sodium ion is 2.5~3.5%.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933861A (en) * | 2013-08-02 | 2014-07-23 | 浙江赛特膜技术有限公司 | Method for preparing methionine and sodium hydroxide through bipolar membrane electrodialysis |
| CN106040001A (en) * | 2016-05-30 | 2016-10-26 | 杭州蓝然环境技术有限公司 | Methionine salt saponified liquid carbonate removing process |
| CN106432020A (en) * | 2016-09-14 | 2017-02-22 | 宁夏紫光天化蛋氨酸有限责任公司 | Separation and purification method of D,L-methionine |
| CN206142985U (en) * | 2016-09-23 | 2017-05-03 | 内蒙古久科康瑞环保科技有限公司 | High processing system who contains zero release of salt industrial waste water |
| EP3406593A1 (en) * | 2017-05-24 | 2018-11-28 | Evonik Degussa GmbH | Method for manufacturing methionine |
| CN210635832U (en) * | 2019-01-10 | 2020-05-29 | 杭州蓝然环境技术股份有限公司 | Double-membrane integrated device for treating weak acid salt wastewater |
-
2019
- 2019-01-10 CN CN201910024128.4A patent/CN109626671A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933861A (en) * | 2013-08-02 | 2014-07-23 | 浙江赛特膜技术有限公司 | Method for preparing methionine and sodium hydroxide through bipolar membrane electrodialysis |
| CN106040001A (en) * | 2016-05-30 | 2016-10-26 | 杭州蓝然环境技术有限公司 | Methionine salt saponified liquid carbonate removing process |
| CN106432020A (en) * | 2016-09-14 | 2017-02-22 | 宁夏紫光天化蛋氨酸有限责任公司 | Separation and purification method of D,L-methionine |
| CN206142985U (en) * | 2016-09-23 | 2017-05-03 | 内蒙古久科康瑞环保科技有限公司 | High processing system who contains zero release of salt industrial waste water |
| EP3406593A1 (en) * | 2017-05-24 | 2018-11-28 | Evonik Degussa GmbH | Method for manufacturing methionine |
| CN210635832U (en) * | 2019-01-10 | 2020-05-29 | 杭州蓝然环境技术股份有限公司 | Double-membrane integrated device for treating weak acid salt wastewater |
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